Hi
Like I said, it could be any one of them, it may not even be limited to the men.
Here are the siblings:
Annie Byrt
Arthur W Byrt
Frederick G Byrt
Hilda Byrt
Edith R Byrt
Leonard Byrt
Douglas R Byrt
I know that Arthur, Frederick and Douglas all died in the war. I also know Edith was a nurse.
Thanks